Swept mesh comsol

Application ID: 69111. To make the mesh, a free triangular mesh is created on WorkPlane1. Design Criteria: The design criteria to model the diseased tissue of the cervical cancer lesion could vary depending on the patient. I am trying to cunduct mesh convergence analysis on my model and change the value of minimum element size (mesh) by the step of 2^(-n) (n is a predefined parameter). New Functionality in Studies and Solvers MATERIAL AND FUNCTION SWEEPS New Material Sweep and Function Sweep study steps are parametric sweeps over different materials and functions, which you add under Switch nodes, which you can Remesh per step during auxiliary sweep Posted Sep 24, 2021, 3:56 AM PDT Mechanical, Mesh, Studies & Solvers Version 5. Hello Mack, Very thin (and very elongated) structures like this one lend themselves very well to swept meshing. Suggestion de Produits. COMSOL, the COMSOL logo, COMSOL Multiphysics, Capture the Concept, COMSOL Desktop, of the resonator, but are included to allow a suitable swept mesh to be easily However, it was too complex to add a free tetrahedral mesh to a swept mesh. Swept meshing is a geometry discretization technique available in COMSOL Multiphysics for specific types of geometries, including thin geometries, geometries with bends, and models with little or no variation in a specific direction. Coarse mesh, fine mesh, mesh with maximum element size and distribution mesh are shown. #3. However, it was too complex to add a free tetrahedral mesh to a swept mesh. × Warning Your internet explorer is in compatibility mode and may not be displaying the website correctly. In a previous blog entry, we introduced meshing considerations for linear static problems. To implement a parametric sweep in COMSOL Multiphysics, a Parametric Sweep study step is added to the study to change the frequency bands. One of the key concepts there was the idea of mesh convergence — as you refine the mesh, the solution will become more accurate. I then tried to do a swept mesh on the next layer down, using the bottom COMSOL Multiphysics ® version 5. The COMSOL Models. You can use several connected faces as source faces. In boundary selection mode, the software creates a swept mesh on the remaining domains using the selected boundaries as source faces. The second purpose is to explain in detail how to conduct these convergence studies in both using the graphical user interface (GUI) of COMSOL 4. I am modeling a device composed of very thin layers, so I am trying to mesh it with a swept mesh. Exporting Mesh to a COMSOL Multiphysics File . Concluding Remarks. Right-click the node Study 1, and then select Compute. The COMSOL Multiphysics ® simulation environment facilitates all steps in the modeling process—defining your geometry, specifying physics, meshing, solving, and then postprocessing the results. Note that when performing a parametric sweep, COMSOL Multiphysics will remesh every time a parameter in the mesh changes, which may noticeably slow down the in COMSOL; this is the contents of Section 2. If the mesh contains anisotropic elements (for example, a boundary layer mesh), it is best to disable mesh coarsening to preserve the anisotropic structure. Show mesh sensitivity of solution. See Reference Manual for COMSOL Multiphysics, version 5. The surface mesh is then extruded for all domains. Swept Meshing of a Bracket Geometry This tutorial demonstrates both how to partition a 3D part to create a structured mesh, and also how to combine structured and unstructured meshes in the same part. If you have selected to allow coarsening, specify the Maximum coarsening factor (a value of 5 by default) to scale the refined mesh size in the regions where refinement is not needed • Remesh per step during auxiliary sweep Posted Sep 24, 2021, 3:56 AM PDT Mechanical, Mesh, Studies & Solvers Version 5. The mesh control domain is merged into the larger domain. Mechanical failure through the cracking of the vulcanized rubber skin layer in the heel/ankle region of the Jaipur foot has been found to be a common occurrence, and the reduction of the stress in this material is key to its prevention. A default mesh on the electronic component geometry. The adaptive mesh refinement algorithm then refines the mesh along the solidification front because this is the region where the results are strongly dependent upon mesh size. Finally, the geometrical properties in the COMSOL model are all parameterized to enable structural optimization without re-editing the model Remesh per step during auxiliary sweep Posted Sep 24, 2021, 3:56 AM PDT Mechanical, Mesh, Studies & Solvers Version 5. The COMSOL Batch license and Cluster Node license are both checked out for you, but the regular COMSOL license will be checked back in. Vishnuvardhan Janapati . Local (barycentric) coordinates ξ i in each mesh element are available as xi1, xi2, and xi3. Swept mesh errors. The swept mesh is typically a hexahedral mesh (hex mesh) or a prism mesh. Also the destination can consist of several faces, as long as each destination face corresponds to at least one source face and each source face corresponds to exactly one destination face. COMSOL Multiphysics ® version 5. Now, the Free Tetrahedral mesh operation will automatically insert a layer of pyramid elements between the swept hexahedral/prismatic elements and the tetrahedral elements. 0a as well as using COMSOL’s LiveLink for MATLAB. 3. The COMSOL Multiphysics Reference Manual chapter on Infinite Elements, Perfectly Matched Layers, and Absorbing Layers. I also thought about changing the swetp mesh elements to tets and than meshing the rest with free, but unfortunatelly my case is the small induction machine(the one we can meaure in our lab) and it has so small air gap(the critical area between the straight and twisted 2D->3D geometry extrusion meshed with sweep mesh - stator, rotor respetivelly) that the free mesh algorythm fails Hi, I would like to build a "relatively" sophisticated swept mesh which would involve the step of building a nice 2D mesh and then sweeping that. We will introduce you to basic meshing concepts, such as how to tweak the meshing parameters for unstructured meshes. After enabling the Physics-Controlled Mesh feature and clicking the mesh button, COMSOL Multiphysics will mesh the infinite element domains with a Swept mesh (and the rest of the domains accordingly). The density of the cancerous tissue Remesh per step during auxiliary sweep Posted Sep 24, 2021, 3:56 AM PDT Mechanical, Mesh, Studies & Solvers Version 5. Comsol was unable to run my model at any other mesh than the normal, coarse, or fine mesh. However the range function in parametric sweep section does not work that way. 4 brings a new meshing tutorial model. Using COMSOL Multiphysics, a Parametric Sweep can be used to determine the initial rotor angle that will produce the maximum rotor torque. By: Victoria Heasley. swept mesh is used for all domains, except a small boxed region enclosing the dipole source where free triangular mesh is applied. What to do if you have COMSOL older than 3. However, it is important to use swept mesh for PML meshing. The Deformed Geometry and Moving Mesh interfaces are useful for modeling situations where a domain is deforming, as well as when it is moving in a completely prescribed way, either as a function of time or as a function of a model parameter in a parametric sweep or auxiliary sweep. the meshing techniques that are available to . Batch Sweep . The smoothness of these integrals is dependent upon the level of mesh refinement, but refining the mesh increases computational cost. This loops all the way around the geometry and the mesh, so you can change the geometry dimension (provided you do not change the topology such that COMSOL renumbers the Entity id's and mixes up the BC and domains !!) In the model, the COMSOL Multiphysics software sets one terminal to 1 V and all others to ground during the sweep, resulting in the following two solutions: You can use Results > Global Matrix Evaluation to extract the capacitance matrices in different notations, including the Maxwell capacitance matrix and the mutual capacitance matrix. 6 0 Replies Karen Eich Hammer In the COMSOL Multiphysics ® software, you can streamline the process of meshing your model geometry by having the software do it automatically or you can choose to build a custom mesh manually. Further Resources. The surface plot of the magnetic flux density in the machine enables you to visually determine whether the utilization of the iron is optimal for efficient torque production. com This tutorial demonstrates how to partition a 3D part to create a swept mesh. The density of the cancerous tissue During this stage, the COMSOL Desktop® is locked and the software is busy tracking the remote job. The resulting mesh, shown above, consists of about 45,000 elements. 6 0 Replies Karen Eich Hammer The Deformed Geometry and Moving Mesh interfaces are useful for modeling situations where a domain is deforming, as well as when it is moving in a completely prescribed way, either as a function of time or as a function of a model parameter in a parametric sweep or auxiliary sweep. Figure 7: Change Mesh Size. More advanced topics include working with swept meshes and creating mesh plots. The result is prismatic elements, not tetrahedral elements, so it is simple to define the number of element through the thickness of the electrode (distribution property of the sweep) without creating small nodes in the other May 9, 2013. That is all. Send Private Message Flag post as spam. I did a free triangular mesh on the top of the top layer, which consists of several pieces of the same thickness, then I did a swept mesh on the top layer. com/Tutorial_Comsol_Download_DonateCOMSOL 4. Posted 21. , Magnetic Fields, Electric Currents, etc. Maybe that 2D mesh would itself have some swept or mapped components. Adam Gordon. Swept meshing is a powerful technique for minimizing the computational complexity of many classes of COMSOL Multiphysics models. For sweep mesh you have some limitations, you cannot sweep over topology changes, what you can do is. We have shown how the mesh adaptation tools in COMSOL Multiphysics can be used to construct meshes adapted to a specific purpose. See full list on comsol. The Remesh per step during auxiliary sweep Posted Sep 24, 2021, 3:56 AM PDT Mechanical, Mesh, Studies & Solvers Version 5. A swept mesh starts at a source boundary and sweeps along to a specified destination boundary. This is done through a physics-controlled or user-controlled mesh sequence type, respectively. Using a "coarse" physics-determined mesh, COMSOL solved for 1593 elements and about 3000 degrees of freedom for each of the values in the parametric sweep. Finally, the geometrical properties in the COMSOL model are all parameterized to enable structural optimization without re-editing the model Therefore, one workaround is to use a parametric sweep around the Frequency Domain study step. It provides an overview of the COMSOL ® environment with examples that show you how to use the COMSOL Desktop ® user interface and the Model Builder. In general, it is required that the However, it is important to use swept mesh for PML meshing. soft-hummingbird. Convergence test has been performed to ensure the mesh density is sufficient. Section 3 details the steps necessary in the GUI to manually obtain the raw results of the convergence A 2D axi-symmetric and a simplified 3D Fluid-Structure Interaction multiphysics model with an Arbitrary Lagrangian-Eulerian mesh is developed in the commercial software Comsol Multiphysics (6). If you compute the model with a parametric sweep, COMSOL Multiphysics cancels the computation at the first failing geometry — even if later ones would finish. 6 0 Replies Karen Eich Hammer A parametric sweep over n, such that each value of n is an octave and the upper and lower frequency limits change accordingly. 3 0 Replies . 6 0 Replies Karen Eich Hammer 1. ). 2011 klo 5. e. 6 0 Replies Karen Eich Hammer Hi, yea. The solidification front computed with the coarsest mesh, and for T = 75 K, is shown in Figure 2 . Learn how to apply swept meshes to geometries with high aspect ratios for more accurate and efficient meshing in COMSOL Multiphysics. Optionally, by adding a tailored graphical user interface to your model, you can turn it into an application that is usable by anyone, regardless of . Fo sweep mesh thre are many (logical) restrictions, as COMSOl cannot really tell how a surface evolves from the "source" to the "target" surface, it assumes a linear relations, and basically copies the mesh over, so if the area do not match, or if here are may elements on several borders it might get confused. Please login with Note that while COMSOL employees may participate in the discussion forum, COMSOL ® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team. 6 0 Replies Karen Eich Hammer Enable automatic meshing from the settings window of the physics interface node (e. To save the updated design, from the main menu, select File | Save. After the simulation starts, wait for one to two minutes. This mesh is automatically created and adapted for the model’s physics settings, with the element size defaulting to Normal, and the meshing sequence, consisting of a Size and a Free Tetrahedral node, is hidden. A parametric sweep allows you to change the parameter values through a specified range. That should determine how thick your PML should be. 2017, 10:30 GMT-7 Mesh Version 5. Optimizing the Thickness of the Vulcanized Rubber Layer. This loops all the way around the geometry and the mesh, so you can change the geometry dimension (provided you do not change the topology such that COMSOL renumbers the Entity id's and mixes up the BC and domains !!) swept mesh is used for all domains, except a small boxed region enclosing the dipole source where free triangular mesh is applied. In particular, on that 2D mesh I'd like to have some boundary layers. Feb 26, 2009. You will also learn a useful technique for meshing | 5 Introduction Read this book if you are new to COMSOL Multiphysics®. Basically it accepts only models that are made in layers that is all swept domains must have the same height in the sweep direction, and only one common boundary defining your top (or bottom) sweep mesh "seed" is allowed. I read few COMSOL blogs, they mentioned that COMSOL can calculate the convergence curve by sweeping the mesh size. The outer loop is the specific "Parameter sweep" node you are using in your pdf example. May need some further mesh definitions depending on your geometry, but still usually doable. Additional Resources To learn how this add-in was created, you can view, and even modify, its Application Builder settings by loading the corresponding MPH-file from the COMSOL installation directory. This process is very similar to how the Batch Sweep node works. 2 Multiphysics. A wide transition between the molten and solid state is observed. Screenshot showing a manual meshing strategy, along with the Parametric Sweep feature and the resultant Data Set. Sweep the parameter over f0 and set f0 to be the frequency in the Frequency Domain step. 3, Chapter 8, and in particular the swept mesh tutorial that starts on page 593. 49 UTC-7 Batteries & Fuel Cells, Geometry, Mesh 0 Replies Nabil Kenan Send Private Message Flag post as spam The Deformed Geometry and Moving Mesh interfaces are useful for modeling situations where a domain is deforming, as well as when it is moving in a completely prescribed way, either as a function of time or as a function of a model parameter in a parametric sweep or auxiliary sweep. Note that the Absorbing Layer, used in the Time Explicit approach, should be meshed with triangular (in 2D) or tetrahedral (in 3D) elements, and not with a swept mesh. 6 0 Replies Karen Eich Hammer Swept Meshing of a Bracket Geometry. Hi sweep mesh can be quite tough on complex geoemtrry models. 6 0 Replies Karen Eich Hammer Swept mesh errors. donate and download files in full HD here:http://www. An example model from the core COMSOL Multiphysics package that demonstrate the usage of this functionality is The Blasius Boundary Layer. I then tried to do a swept mesh on the next layer down, using the bottom Enable automatic meshing from the settings window of the physics interface node (e. 3, you would use the Convert operation to connect swept meshes to unstructured tetrahedral meshes. To determine the effect of nozzle diameter on flow profiles and velocities, a parametric sweep varied the tip radius at the values of 75 microns, 125 microns, and 500 microns. May 9, 2013. Note that when performing a parametric sweep, COMSOL Multiphysics will remesh every time a parameter in the mesh changes, which may noticeably slow down the Remesh per step during auxiliary sweep Posted Sep 24, 2021, 3:56 AM PDT Mechanical, Mesh, Studies & Solvers Version 5. Your parameter set could control your geometry and, for some values, the geometry causes your solving or meshing to fail. This tutorial demonstrates how to partition a 3D part to create a swept mesh. I also thought about changing the swetp mesh elements to tets and than meshing the rest with free, but unfortunatelly my case is the small induction machine(the one we can meaure in our lab) and it has so small air gap(the critical area between the straight and twisted 2D->3D geometry extrusion meshed with sweep mesh - stator, rotor respetivelly) that the free mesh algorythm fails Before COMSOL ® software version 5. I know how to do for 2D but for 3D, I am not getting correct result. Tracking the progress of the remote job in the External Process window from scheduling the job (top) to Done (bottom). In the meshing mode, using the swept or mapped meshing control can "rid" you of the triangular meshes constructed by the free meshing routine. To create a swept mesh: In the Mesh ribbon toolbar (Windows) or from the Mesh contextual toolbar (macOS and Linux), click the Swept ( ) button. This tutorial shows how to Remesh per step during auxiliary sweep Posted Sep 24, 2021, 3:56 AM PDT Mechanical, Mesh, Studies & Solvers Version 5. November 4, 2013. by Walter Frei. Five layers are good starting point, and each meshing element should be of the same size as nearest meshing element in the modeling space. 06. Remesh per step during auxiliary sweep Posted Sep 24, 2021, 3:56 AM PDT Mechanical, Mesh, Studies & Solvers Version 5. 6 0 Replies Karen Eich Hammer Swept meshing is a geometry discretization technique available in COMSOL Multiphysics for specific types of geometries, including thin geometries, geometries with bends, and models with little or no variation in a specific direction. 5a without hotfix. Therefore, one workaround is to use a parametric sweep around the Frequency Domain study step. 2) to mesh the internal bloc side i. This is particularly beneficial if this operator is used to introduce a coupling within a multiphysics model. Meshing Your Geometry: When to Use the Various Element Types. The 2D model can assess the effects of cone angle, cone angle difference between the cones, crowning of the cones, oil viscosity, oil density, applied Remesh per step during auxiliary sweep Posted Sep 24, 2021, 3:56 AM PDT Mechanical, Mesh, Studies & Solvers Version 5. In this tutorial video, we will teach you how to implement a parametric sweep with the COMSOL ® software. COMSOL, the COMSOL logo, COMSOL Multiphysics, Capture the Concept, COMSOL Desktop, of the resonator, but are included to allow a suitable swept mesh to be easily The smoothness of these integrals is dependent upon the level of mesh refinement, but refining the mesh increases computational cost. you in the COMSOL Multiphysics ® software. By using your engineering judgment and knowledge to address each problem, you can obtain high-accuracy results quickly and at relatively lower computational costs than with default mesh settings. 1) remove or disable the specific union 1 node in your geometry sequence, then. boundaries 25 26 27 (once the union has been removed) with tri or quad and then sweep your domains 2, 3, 4 ,5. I believe COMSOL BV Röntgenlaan 37 That is, a swept mesh over a domain with N faces on the source side and M faces on the destination side. Issues with swept mesh. HD Video and COMSOL file for download: 09 Setting up RF-Physics - This tutorial covers: Setting up RF Module Physics, Radio frequency module, Scattering Boundary condition, Electric field, planar electromagnetic wave, Frequency Domain, wavelength, single slit. COMSOL Model-Lesion. 6 0 Replies Karen Eich Hammer Posted 31. The cervical cancerous lesion was modeled based on average measurements to see how the different procedures would affect the tissue. g. The mesh in the above examples are swept meshes, but you can just as well use an unstructured tetrahedral or triangular mesh. Instead of manually changing these property values and re-solving each time, you can perform a parametric sweep with COMSOL Multiphysics ®. 6 0 Replies Karen Eich Hammer Before COMSOL ® software version 5. If only integrating along a single direction, use a swept mesh in that direction if possible. The domains and sources faces wouldn’t comply. The Size Expression attribute in the Mesh node can be used to control the size used when generating triangular and tetrahedral mesh. The example explores different strategies for partitioning the geometry, and demonstrates how to combine hexahedral and tetrahedral meshes.